org.apache.flink.runtime.checkpoint

类 EmbeddedCompletedCheckpointStore

java.lang.Object

org.apache.flink.runtime.checkpoint.EmbeddedCompletedCheckpointStore

所有已实现的接口:

CompletedCheckpointStore

public class EmbeddedCompletedCheckpointStore
extends Object
implements CompletedCheckpointStore

An embedded in-memory checkpoint store, which supports shutdown and suspend.

字段概要

从接口继承的字段 org.apache.flink.runtime.checkpoint.CompletedCheckpointStore

LOG

构造器概要

构造器

构造器和说明
EmbeddedCompletedCheckpointStore()
EmbeddedCompletedCheckpointStore(int maxRetainedCheckpoints)
EmbeddedCompletedCheckpointStore(int maxRetainedCheckpoints, Collection<CompletedCheckpoint> initialCheckpoints)

方法概要

限定符和类型	方法和说明
void	addCheckpoint(CompletedCheckpoint checkpoint, CheckpointsCleaner checkpointsCleaner, Runnable postCleanup) Adds a CompletedCheckpoint instance to the list of completed checkpoints.
List<CompletedCheckpoint>	getAllCheckpoints() Returns all CompletedCheckpoint instances.
int	getMaxNumberOfRetainedCheckpoints() Returns the max number of retained checkpoints.
int	getNumberOfRetainedCheckpoints() Returns the current number of retained checkpoints.
Optional<org.apache.flink.api.common.JobStatus>	getShutdownStatus()
boolean	requiresExternalizedCheckpoints() This method returns whether the completed checkpoint store requires checkpoints to be externalized.
void	shutdown(org.apache.flink.api.common.JobStatus jobStatus, CheckpointsCleaner checkpointsCleaner) Shuts down the store.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.apache.flink.runtime.checkpoint.CompletedCheckpointStore

getLatestCheckpoint, getLatestCheckpointId

构造器详细资料

EmbeddedCompletedCheckpointStore

public EmbeddedCompletedCheckpointStore()

EmbeddedCompletedCheckpointStore

public EmbeddedCompletedCheckpointStore(int maxRetainedCheckpoints)

EmbeddedCompletedCheckpointStore

public EmbeddedCompletedCheckpointStore(int maxRetainedCheckpoints,
                                        Collection<CompletedCheckpoint> initialCheckpoints)

方法详细资料

addCheckpoint

public void addCheckpoint(CompletedCheckpoint checkpoint,
                          CheckpointsCleaner checkpointsCleaner,
                          Runnable postCleanup)
                   throws Exception

从接口复制的说明: CompletedCheckpointStore

Adds a CompletedCheckpoint instance to the list of completed checkpoints.

Only a bounded number of checkpoints is kept. When exceeding the maximum number of retained checkpoints, the oldest one will be discarded.

指定者:

addCheckpoint 在接口中 CompletedCheckpointStore

抛出:

Exception

shutdown

public void shutdown(org.apache.flink.api.common.JobStatus jobStatus,
                     CheckpointsCleaner checkpointsCleaner)
              throws Exception

从接口复制的说明: CompletedCheckpointStore

Shuts down the store.

The job status is forwarded and used to decide whether state should actually be discarded or kept.

指定者:

shutdown 在接口中 CompletedCheckpointStore

参数:

jobStatus - Job state on shut down

checkpointsCleaner - that will cleanup completed checkpoints if needed

抛出:

Exception

getAllCheckpoints

public List<CompletedCheckpoint> getAllCheckpoints()

从接口复制的说明: CompletedCheckpointStore

Returns all CompletedCheckpoint instances.

Returns an empty list if no checkpoint has been added yet.

指定者:

getAllCheckpoints 在接口中 CompletedCheckpointStore

getNumberOfRetainedCheckpoints

public int getNumberOfRetainedCheckpoints()

从接口复制的说明: CompletedCheckpointStore

Returns the current number of retained checkpoints.

指定者:

getNumberOfRetainedCheckpoints 在接口中 CompletedCheckpointStore

getMaxNumberOfRetainedCheckpoints

public int getMaxNumberOfRetainedCheckpoints()

从接口复制的说明: CompletedCheckpointStore

Returns the max number of retained checkpoints.

指定者:

getMaxNumberOfRetainedCheckpoints 在接口中 CompletedCheckpointStore

requiresExternalizedCheckpoints

public boolean requiresExternalizedCheckpoints()

从接口复制的说明: CompletedCheckpointStore

This method returns whether the completed checkpoint store requires checkpoints to be externalized. Externalized checkpoints have their meta data persisted, which the checkpoint store can exploit (for example by simply pointing the persisted metadata).

指定者:

requiresExternalizedCheckpoints 在接口中 CompletedCheckpointStore

返回:

True, if the store requires that checkpoints are externalized before being added, false if the store stores the metadata itself.

getShutdownStatus

@VisibleForTesting
public Optional<org.apache.flink.api.common.JobStatus> getShutdownStatus()